Is there a program that can....

[Neodude1123201]

Tell me How many Decibells is coming through my mic?

 

[Szat]

My guess is that you would need some external meter for measuring decibel levels.

 

[Rudster8161]

any sound mixing program should have that info. im pretty sure audicaty does, although bear in mind it cant measure actual hearing decibels from speakers.